#include <stdio.h>
int main()
{
	int n,m,j;
	printf("enter a five num:");
	scanf("%d",&n);
	if(n/10000==n%10 && (n/1000)%10==(n/10)%10)
		printf("it is huiwenshu\n");
	else 
		printf("no\n");
	return 0;
}
